The calculated distance (air line) between San Agustín Acasaguastlán and Puerto Barrios is approximately 106 miles respectively 171 kilometers.
By car or train, the actual journey to Puerto Barrios is certainly longer, as only the direct route (as the crow flies) between San Agustín Acasaguastlán and Puerto Barrios has been calculated here.
Air line (approximately)
171 kilometers
92 nautical miles